A poll by Sami Smoocha, sociologist at the University of Haifa, finds that 28 percent of Israel’s Arab citizens believe the Holocaust never happened. Among high school and college graduates the figure is 33 percent. (With 721 Arabs interviewed, the margin of error is 3.7 percent.) Smoocha explains that Arab radicals see the Holocaust as a political event; by denying it, they understand that they are expressing opposition to Israel.